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This system compatibility helps protect equipment and simplify troubleshooting
A worn O-ring can cause persistent leaks or air intrusion
Elevate your outdoor fire feature with the 31" Water Over Outdoor Fire Kit
Helps maintain prime and stable circulation flow
the pool can stay cloudy and require frequent cleanings
Hayward Sand Filter Lateral Holder Assembly, Elbow Included | SX311MAS PresAir This system compatibility helps protectHayward SX311MAS Lateral Holder Assembly with Bottom Vertical Pipe and Bottom Elbow The Hayward SX311MAS Lateral Holder Assembly is a genuine OEM internal filter replacement part for select Hayward ProSeries high rate sand filters. This assembly is designed to replace the lower internal underdrain section that supports proper water movement through the sand bed during filtration and backwashing. Hayward identifies the SX311MAS as the lateral holder